Across
1
Region near the equator
3
Largest river in South America
5
Large area covered with trees
9
Total number of people in an area
11
Area where water covers the soil
12
Narrow sea inlet between cliffs
Down
2
Wearing away of land by water or wind
4
Region between the two tropic lines
6
Long-term weather patterns of an area
7
Cold treeless Arctic plain
8
Large body of water partly enclosed by land
10
Vast body of salt water
13
Largest ocean on Earth
14
Mountain that can erupt with lava